Adaptive　Front　Lighting　System(AFS)　is　most　advanced　vehicle　lighting　system,　which　can　greatly　reduce　driver＇s　fatigue　degree　when　driving　on　curve　road　at　night,　make　driver　clearly　see　actual　road　surface　at　turn　around,　make　driver　have　abundant　time　to　deal　with　emergency　,　and　evidently　promote　safety　at　night.　Most　high　class　vehicles　have　been　fixed　AFS　in　Japan,　meanwhile　AFS　will　be　used　in　China　soon.　At　current,　most　AFS　vehicles　adopt　stepper　motor,　whose　merits　are　that　motor　price　is　cheap,　control　algorithm　and　controller　hardware　are　very　easy,　control　precision　is　high,　whose　maximal　shortcomings　are　as　stepper　motor　adopts　open-loop　control　,loss　steps　often　happens,　which　can　affect　control　capability.　In　this　article,　based　on　brushless　DC　motor　(BLDC)　AFS　controller　system　is　designed:　Simulink/Matlab　model　is　setup,　position　sensor　only　adopts　three　hall　elements,simulation　results　and　experiment　show　that　BLDC　has　more　quick　response　speed　than　stepper　motor.　But　to　a　small　given　reference　steps,　there　exists　small　error.